Show image from recent topics in the front page

I want my nodebb front page to show recent topics, if the recent topic contains image, show the first image of the topic. I'm aware of the feature thumbnail, but I hope user don't have to manually set that, also the thumbnail is really small which isn't the way I want. What I want is more like pinterest's front page.

Is there some plugin or theme like what I described? Otherwise I'll have to start learning how to develop nodebb plugin

I'll think about writing something like this in future
Right now, you can get an API call of a user's latest posts, so theoretically you could write a simple widget that makes a call to that route (for the admin user) and renders the latest posts using the same code as the other widgets. So for a very basic implementation, if you know your 1-3 admins/moderators, you can easily hack it together using existing code